The Changelog can be found [here](https://developers.zoom.us/changelog/meeting-sdk/web/).
A couple of notable milestones:
- 3.6.x: switched to using the Zoom 6.0 UI
- 3.5.2: upgraded React 16 -> 18; last version where older Zoom 5.0 UI is used
- 3.1.6: latest version that supports React 16